North Korean leader Kim Jong Un, right, with his uncle Jang Song Thaek reviewing a Feb. 16, 2012, parade of thousands of soldiers and commemorating the 70th birthday of the late Kim Jong Il in Pyongyang, North Korea. / Kytodo News Agency via AP

by Michael Winter, USA TODAY

by Michael Winter, USA TODAY

As part of a second purge of top North Koreans following the execution of leader Kim Jong Un's uncle, 11 high-ranking officials have been imprisoned or put to death, including a security chief "burned alive" by a flamethrower, a South Korean newspaper reported Tuesday.

An additional 100 lower-ranking Workers Party officials were fired, an unidentified source toldThe Chosen Ilbo, while a third round of purges will target regional supporters of Kim's powerful uncle Jang Song Thaek, who was executed in December as "a traitor" after being convicted of "anti-party, counter-revolutionary factional acts."

In a separate report, the newspaper reported that North Korea intends to execute 200 high-ranking officials loyal to Jang and that about 1,000 family members might be interred in concentration camps.

Jang's elder sister, her husband, Jon Yong Jin, who was North Korea's ambassador to Cuba, and their son-in-law, who headed a trading company, were among those executed Sunday, according to the South Korean report, which could not be independently verified.

The official killed by a flamethrower was O Sang Hon, a deputy minister at the Ministry of Public Security, who was accused of using the department as Jang's personal protection service on par with security provided to Kim, the source explained.